Up to now, after the technological transformation, Tarim Oilfield Sanjiao operating area on the 2nd pump injection test run successfully into the stable state. According to preliminary calculations, this single-pump reform can save 2 million kilowatt hours of electricity and save 1 million yuan in electricity bills.
There are three centrifugal water injection pumps in the Sannan Oil and Gas Processing Plant in the Tarim Oilfield. When the pump runs at power frequency, the outlet pressure reaches 17 MPa and the pressure in the water injection network is 9.5 MPa. If you depend on the water pump outlet valve to reduce the pressure to the pipe network pressure, on the one hand, there is a huge energy loss, on the other hand, the water pump outlet valve due to large throttle and reduce life expectancy.
In order to solve this problem, Sanjiao operation area will pump energy-saving retrofit as one of the important research topics of energy-saving and efficiency improvement of Liu Yongming Innovation Studio in 2017. Through the field data acquisition and theoretical calculation, the impeller is downgraded as the final implementation plan. With the support of Sanjay Work Area, the operation department will carry out the task of transforming the skills to implement the project of Sanjay Project of Huayou Xinhai Company.
After exploration and research, equipment technicians and process maintenance team collaborated and conducted collective research and independently completed the disassembly, reduction and reloading of water injection pumps. After the transformation of the water injection system in Sangnan Station, the high-pressure water injection pump adopts power frequency and frequency conversion to reduce its flow rate through frequency conversion so as to adjust the total flow rate to the flow rate of water injection and realize energy saving and consumption reduction. At present, the No. 2 pump of Sangnan is in good condition and its pressure at the pump outlet is reduced from 17 MPa to 10.4 MPa. Under the same pump displacement, the operating power of the motor is reduced by 30%.
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